i can only speak of Yanagi Hara Ryu which is the specific Kortu I belong to. John Clodig, student of Don Angier, student od Kenji Yoshida, son and student of Kotaro Yoshida.

We are definitely principle based. Essentially we have about 160 techniques. But if you train only a handfull (40) with a focus on principles, you find yourself not really thinking of technique anymore. You just move and act using principles. Ikkyo in this respect, has a multitude of expressions. So does Kota Gaeshi. Kota is primarily a study of throwing through the forearm. Ikkyo- through an outstretched arm.

I am a pretty practical guy with 20 years of Jujitsu as well. A bodyguard by trade, if I did not trust the value of my training, I would move on in a heartbeat.